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Creating a web service for performing arithmetic operations


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Creating a web service for performing arithmetic operations

Introduction:

I am creating a web service for performing arithmetic operations or say a calculator. Then, I will use this service in a windows based application to perform arithmetic operations like a calculator. So, let's create a web service. Following is the Code Snippet.

Now replace the code on .asmx.cs page with the following code.

using System;
using
System.Collections.Generic;
using
System.Linq;
using
System.Web;
using
System.Web.Services;

namespace
calc
{
    ///<summary>
    /// Summary description for CalcWebService
    ///</summary>
    [WebService(Namespace = "mycalculatorexample.org")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
    // [System.Web.Script.Services.ScriptService]
    public class CalcWebService : System.Web.Services.WebService
    {
       [WebMethod]
        public string calculate(string first, string second, char sign)
        {
            string result;
            switch (sign)
            {
                case '+':
                    {
                        result = (Convert.ToInt32(first) + Convert.ToInt32(second)).ToString();
                        break;
                    }
                case '-':
                    {
                        result = (Convert.ToInt32(first) - Convert.ToInt32(second)).ToString();
                        break;
                    }
                case '*':
                    {
                        result = (Convert.ToInt32(first) * Convert.ToInt32(second)).ToString();
                        break;
                    }
                case '/':
                    {
                        result = (Convert.ToInt32(first) / Convert.ToInt32(second)).ToString();
                        break;
                    }
                case '%':
                    {
                        result = (Convert.ToInt32(first) % Convert.ToInt32(second)).ToString();
                        break;
                    }
                default:
                    result = "Invalid";
                    break;
            }
            return result;
        }
    }
}

 

 
Run the application.

Output:
Creating a web service for performing arithmetic operations

Go to test page by clicking at "calculate" -> do the entry and click the "invoke" button.
 
Creating a web service for performing arithmetic operations

It will show the result like the below figure. (After clicking the "invoke" button)

Creating a web service for performing arithmetic operations

Similarly, you can perform different operations like addition, subtraction, multiplication, division and modulo division. Now we consume this web service into window form application.

Create a windows application and add a service reference (You can get help here ). After adding the reference, go to the design page and arrange the UI controls like in the below figure.

Creating a web service for performing arithmetic operations

Now, write the following code in the .cs file.

using System;
using
System.Collections.Generic;
using
System.ComponentModel;
using
System.Data;
using
System.Drawing;
using
System.Linq;
using
System.Text;
using
System.Windows.Forms;
 
namespace
Calculator
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        string i, j;
        static char c;
        private void btnthree_Click(object sender, EventArgs e)
        {
            textBox1.Text += Convert.ToString(3);
        }
        private void btnone_Click(object sender, EventArgs e)
        {
            textBox1.Text += Convert.ToString(1);
        }
        private void btntwo_Click(object sender, EventArgs e)
       {
            textBox1.Text += Convert.ToString(2);
        } 
        private void btnfour_Click(object sender, EventArgs e)
        {
            textBox1.Text += Convert.ToString(4);
        } 
        private void btnfive_Click(object sender, EventArgs e)
        {
            textBox1.Text += Convert.ToString(5);
        } 
        private void btnsix_Click(object sender, EventArgs e)
        {
            textBox1.Text += Convert.ToString(6);
        } 
        private void btnseven_Click(object sender, EventArgs e)
        {
            textBox1.Text += Convert.ToString(7);
        } 
        private void btneight_Click(object sender, EventArgs e)
        {
            textBox1.Text += Convert.ToString(8);
        } 
        private void btnnine_Click(object sender, EventArgs e)
        {
            textBox1.Text += Convert.ToString(9);
        } 
        private void btnzero_Click(object sender, EventArgs e)
        {
            textBox1.Text += Convert.ToString(0);
        } 
        private void btnplus_Click(object sender, EventArgs e)
        {
            i = textBox1.Text;
            textBox1.Text = "";
            c = '+';
        }
        private void btnminuse_Click(object sender, EventArgs e)
        {
            i = textBox1.Text;
            textBox1.Text = "";
            c = '-';
        }
        private void btnmultiply_Click(object sender, EventArgs e)
        {
           i = textBox1.Text;
            textBox1.Text = "";
            c = '*';
        }
        private void btndivide_Click(object sender, EventArgs e)
        {
            i = textBox1.Text;
            textBox1.Text = "";
            c = '/';
        }
        private void btnmodulo_Click(object sender, EventArgs e)
        {
            i = textBox1.Text;
            textBox1.Text = "";
            c = '%';
        }
        private void btnequal_Click(object sender, EventArgs e)
        {
            j = textBox1.Text;
            calclocalhost.CalcWebService obj = new calclocalhost.CalcWebService();
            textBox1.Text = obj.calculate(i, j, c);
        }
    }
}

 

Run the application.

Output:
Creating a web service for performing arithmetic operations
You can work as calculator.


Web Service

By Mark Toy on   4 years ago
Keep writing Mohan Kumar... nice article

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